Security bypass vulnerability in LedgerSMB and SQL-Ledger (fixes released today)

Credit: Chris Travers
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-Other

CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

Hi all; George Theall of Tenable Security notified the LedgerSMB core team today of an authentication bypass vulnerability allowing full access to the administrator interface of LedgerSMB 1.1 and SQL-Ledger 2.x. The problem is caused by the password checking routine failing to enforce a password check under certain circumstances. The user can then create accounts or effect denial of service attacks. This is not related to any previous CVE. We have coordinated with the SQL-Ledger vendor and today both of us released security patches correcting the problem. SQL-Ledger users who can upgrade to 2.6.26 should do so, and LedgerSMB 1.1 or 1.0 users should upgrade to 1.1.9. Users who cannot upgrade should configure their web servers to use http authentication for the script in the main root directory. Best Wishes, Chris Travers begin:vcard fn:Chris Travers n:Travers;Chris email;internet:chris (at) metatrontech (dot) com [email concealed] tel;work:509-888-0220 tel;cell:509-630-7794 x-mozilla-html:FALSE version:2.1 end:vcard

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